Set up for a smallblock race engine on pump gas 600hk

He had to get the intakes custom made, so i assume with the bore what it is that was as large and intake valve as he could fit in.
Not sure on exhaust side what he used.
What puzzles me is the intake manifold. Holley only made that piece for W2, correct? Just wondering what is going on with that.... i forgot to ask him.
Not gonna bug him because he is running around and getting ready for the competition.
Gonna have him flow my local ported eddies, and see if more whittling on them will help the 418 they are going on. Also gonna play with my airgap, and let me know based on the bench if my 260/264 565/565 cam would benifit swapping to 1.6 intake and or exhaust rockers.
Have decided to just swap the top off my 360 onto the 418, instead of buying new heads and spending way more money for likely a couple or 3 tenths.
Plus he is gonna buy my 360 shortblock from me( which he built), will knock my bill down with him to not very much.
Wiring my car and painting engine bay already this offseason. Want to stay married..... lol