I used the Summit 2.5in A body system. http://www.summitracing.com/parts/SUM-680144/ and the H pipe http://www.summitracing.com/parts/SUM-642025/
Hooker Headers http://www.summitracing.com/parts/HOK-5901HKR/
The kit isn't designed for a 4spd car or an H pipe, so I had to install it a little...