Does anyone know if the old Herb Mccandless semi fenderwell headers will fit with Indy 440-1 heads on an RB block and stock front suspension in an A-body? They are workin right now with Indy EZ heads, thinkin of going to 440-1 with raised exhaust port. My concerns are fit, performance should be fine with 2" tubes and 3 1/2" collector :banghead: