you might want to check the rear OLN as many early 90s bikes were 126mm. These earlier versions were 7 speed IIRC. Given a few reports that the rear stays don't like to be spread (as in have a propensity to crack) then that would omit you from fitting modern wheelsets to take 8/9 speeds on.
If yours is 130mm then you can have whatever you like, personally I'd say go for 8 speed with downtube shifters if you want a more accurate period bike. That said Shimano brifters had an assuring clonky but pretty accurate shift, the front/left STI's (well the Dura Ace versions at least) had about 4/5 trim shifts on it so you could be as ham fisted as you like with the front derailleur set up and still get it to shift/not have any chain rub on the cage.
check out retrobike, there are lots of knowledgeble types on there some whom could tell you exactly what the original spec was.
gl
you might want to check the rear OLN as many early 90s bikes were 126mm. These earlier versions were 7 speed IIRC. Given a few reports that the rear stays don't like to be spread (as in have a propensity to crack) then that would omit you from fitting modern wheelsets to take 8/9 speeds on.
If yours is 130mm then you can have whatever you like, personally I'd say go for 8 speed with downtube shifters if you want a more accurate period bike. That said Shimano brifters had an assuring clonky but pretty accurate shift, the front/left STI's (well the Dura Ace versions at least) had about 4/5 trim shifts on it so you could be as ham fisted as you like with the front derailleur set up and still get it to shift/not have any chain rub on the cage.
check out retrobike, there are lots of knowledgeble types on there some whom could tell you exactly what the original spec was.
gl