These are my heads

Okay. So get the gaskets you felpro gaskets you mentioned above and install the little metal restrictors?

bingo.  a small dab of high temp RTV/silicone around the water passages.  lube/oil on the head bolt threads and thread sealer on the bolts that go into the water passages. 

put in head bolts torqued to 70 ft-lbs in three steps of 40, 55, and 70 ft-lbs in the pattern below (so do 1-16 at 40, then 1-16 at 55, then 1-16 at 70):

I put the heads already the other day. I put permatex2 on all head bolts cus they all seemed to go thru water. On intake tho, I think only 2 thread all way thru. On those little metal restrictors, leave the little holes open too?

the squares are little metal restrictor inserts.  your intake has the crossover tube in it.  if you use a gasket with it blocked off, eventually the water will penetrate it.  the crossover tube is to warm the intake air when cold to help with keeping a constant air intake temp for smog and smooth idle when cold in a car, and also to cool the intake from the hot oil splashing on the intake manifold from the cam whirling around.  honestly with the oval port heads and intake you're not exactly going to notice the difference with it open or not.  MOST aftermarket intake manifolds are gonna have it blocked off.

Not to be picky but water does not flow through the crossover.  Exhaust gasses flow through there. Yes it heats the carb base to help cold start, but mostly it's an EGR port for emissions, which boats don't have, so yes it should be  blocked off. 

OP, the cardboard intake gaskets will work fine.  Make sure your surfaces are clean, and put a very light coat of silicone around your water ports on each end.  Throw away the end gaskets and run a bead of silicone on each end.  Let your silicone sit to "air" about 5 minutes before you set your intake on it.  Tighten from the center out and don't over tighten the bolts. Torque is 25 ftlbs . I've added a link from Edelbrock that shows the sequence at the bottom. Good luck.

Not to be picky but water does not flow through the crossover.  Exhaust gasses flow through there. Yes it heats the carb base to help cold start, but mostly it's an EGR port for emissions, which boats don't have, so yes it should be  blocked off. 

OP, the cardboard intake gaskets will work fine.  Make sure your surfaces are clean, and put a very light coat of silicone around your water ports on each end.  Throw away the end gaskets and run a bead of silicone on each end.  Let your silicone sit to "air" about 5 minutes before you set your intake on it.  Tighten from the center out and don't over tighten the bolts. Torque is 25 ftlbs . I've added a link from Edelbrock that shows the sequence at the bottom. Good luck.

poop yer right.  was typing too fast.  whoops.