the 8" PTC convertor is 4800-5000.
ian, are you sprayin your small block now?
best time so far is an 11.10@123 with a tight convertor. heres some vids.
http://www.youtube.com/watch?v=H-ONEEn5W1c
http://www.youtube.com/watch?v=-LRu0y0HE40
http://www.youtube.com/watch?v=OX2Hyge2BP8
first two are with flowmaster 44's and last is with borlas. broke a ball joint on last one also.