yeah they will 'bolt' but if your sitting stock youll need about a 4 inch lift all the way around and a perfect offset and possibly a slight cut on the fenders,I have 24's on my 87 s10 blazer with 4x4 rear leafs and a 3 inch lift in the front with a 350 sbc http://www.cardomain.com/ride/2979436
The bell housing bolt pattern would be the same.
YES, They are the same engines. That would be a direct bolt in.
67, to 69 Camaro will bolt right in.
5x127
no
criss cross
They are 5on 5 chevy just like all the others
65 ft lbs torque
a chevy camaro 1990
YES, As long as the GMC 350 is a 1988 to a 1995 year then it will bolt right in and work just perfect.
left to right
YES, It will bolt right in.