It's been a long while since I have been on here. I have a 67 Firebird 326 car with a TH350. 326 is 30 over, 268H comp cam, edelbrock intake w/holley carb. It is the orginal motor but has been built some. Hotchkis front and rear springs, 3:55 gears with auburn locker. I have the chance to buy a 71 catalina 400 with TH400 tranny. This is bone stock with the 2 barrel. Original owner sold the car because it was wrecked and frame bent. Was told the car had 71000 miles on it and the tranny rebuilt 10,000 miles ago. Here's my question. I want to build a 400 and I have read the earlier blocks are better to do that. I will use my intake and carb but want to know what cam, Heads, Headers, etc would you use? Is this motor and trans out of a Catilina a good one to build? And use with my 3:55's A good parts list would be appreciated. Not a race car but a great weekend car