Im planning to put in a built 351c and does any one know if it will bolt straight into my my 68 fastback. its got a c4 and a built 289 in it right now, and do you think the 351 will poop out the 8 inch and c4 if its got around 400 ponies?. (the c4 was rebuilt a few weeks ago and has a shift kit) Thanks....

 

The engine will boltupto the trans,the c-4 should be ok,the 8" will be ok as long as you don't have a trans brake.

 

yep..and later on your can put in that 9"