who to buy rhs heads from

I am a little confused about this pricing thing. On the IMMENGINE site the RHS heads for and LA/MAGNUM is 1395.00 and at Summit the Edelbrock heads are 1431.00. Where is the 400-500 dollar difference?

You can buy the RHS heads in stock form for less then 900.00 bucks & are ready to bolt on., So you'll need to shell out another 500.00 for the eddys & still drop another 200.00 or more for currections, Now your talking 700.00+ differance.