Chewbacca would look roughly the same except he'd only be about 5ft tall, from Blackhill and called Shug. He'd have the same amount of body hair but would also have tattoos, would permanently smell of drink and invariably sport a Rangers top.
Obi-Wan Kenobi would invariably be referred to as Chief or Big Yin by his cohorts. People trying to start a fight with him would addess him as Wanky-Nobby.
Darth Vader would referred to as 'Auld Helmet Heid' or in moments of stress 'That Dome-Heided Basturd'
R2D2 would refuse to go out on the streets after 10pm because of the number of drunks who would try to stuff chip papers in his head casing or piss on him. He would also refuse to go near groups of wee boys at any time because of the high risk of being spray painted/dumped in front of a speeding train/set on fire.
Although proficient in over 3500 languages C3P0 would still be unable to understand anything anyone from the East End of Glasgow said. He would regularly get beaten up for being a 'greetin-faced poof fae Milngavie'.
The Millenium Falcon would have static strips, tinted windscreens and extra-flared exhaust ports. It would have a Daily Record I Love Scotland sticker in the back window and a saltire bumper sticker.
Princess Leia would get captured by Darth Vader because it's hard to run very fast when you're wearing 5inch platform heels and a tiny silver mini-skirt which keeps hiking up over your arse every two steps. And you've been a heavy smoker since you were 6.
The best way to destroy the Death Star would not necessarily be a desperate all out attack. Two easy ways would be - alter its orbit so it passed through Bridgeton and tell the locals it was full of kafflicks, or - leave it unattended in Easterhouse.
Lines from the film as they would be uttered in the vernacular:-
"I've got a real bad feeling about this"
"Ah'm shitin' ma sel' here boy"
"Bring 'em on! I prefer a straight fight to all this sneaking around."
"Come right ahead then cts! Fight the fing lot o ye!"
"There's no mystical energy field controls my destiny."
"The Force?!! D'youse think ah came doon wi the rain?!"
"Hokey religions and ancient weapons are no match for a good blaster at your side, kid."
"Nae messin aboot wi the god squad and auld rubbish, wee man. Get yersel' a decent shooter"
Darth Vader trying to shoot down Luke Skywalker:
"The Force is strong in this one"
"Stop shooglin' ya wee b*stad!"
"You're a little short for a Stormtrooper aren't you?"
"Ah didny think they took short-erses in the polis?"
"This bucket of bolts is never going to get us past that blockade."
"Wuv goat NAE chance in this pile o' sh*te"
Don't try to frighten us with your sorcerer's ways, Lord Vader."
"You think you're that hard, Vader so ye do. Well we're no feart ae you!"
I felt a great disturbance in the Force."
"F*** me! whit wiz aw that?"
Luke to the Emperor
"Your overconfidence is your weakness."
"Oh ye bloody think so?, i'll make you feel the f***ing force pal!!"