Since you're having a converter built I wouldn't worry about any POS dual plane or anything like that. A 383 in that truck leaving the line at 6 or 6500 would be a must IMO. I'd run mid 250's on the intake and low 260's on the exhaust at .050 on a 107 or 9 LSA. Put a super vic on that dude and rev r up where she'll run.