gasket for nitrous engine

[ebola]

Im building n/a 2.5 16 valve hybrid engine for 100 hp nitrous shot. What gasket shall I use? Would it be enough Reinz with o-ringed block or I should go for MLS, or maybe copper? Engine was turboed, but its converted to n/a sidedraft carb, with t2 rods, common block. But uses neon head. I found some info, that if using copper gasket, I have to cut recieving grooves on head too.
It wouldnt be easy for me, so Id prefer stock gasket and o-ringed block.But at the same time I want to floor this engine without that constant feeling of possibility to explode any moment too. What would you think is the optimal desicion I can take? Thanks.
Andrius

cometic

[ebola]

this must be related somehow to Yurij Gagarins birthday yeasterday, right? Very helpfull, thanks.