Yeah seemed a little crazy for 60hp from just heads, b/c the thumper heads are only 30hp @ 5000RPM. The guy I am buying them from ran this setup for his 12.9x. If I get in the 13.xx I will be happy for now.
ported E7 89 vert 1.6rr, e cam, 3.73, drag radials, cobra intake, full exhaust