[COBRA406]

Jim,
The 429/460 90 deg neck should bolt up fine. I have one from
Ford motorsports and it is a "cheezy looking" chrome. Was
real disappointed in the quality. Could not use it because of
clearance problems. I ended up using the 45 deg from a late
70's pickup with a 351M. The choices are limited. Another issue
of many using a Cleveland block.
Bob