your not going to be saving any pennies by buying ebay headers
even if you manage to get them bolted up , they will leak from the get go or soon after the install
thats the fist problem then the other issue is youll need a downpipe to clear atr style headers as most th style and stock wont work
and bov's are a waste of $,
better use of your money would be in data acquisition ...logging
fyi if you run on an o2 sensor they dont last long on c16 so there goes$$$ and plugs run under c16 need to be changed out frequently as performance degrades fast with high lead fuel..more $$
and c16 has nothing on a 93 and alky car as far as hp goes , that $15 gallon fuel gets to your wallet real fast