ok somone asked fi a SBF header fit a LSx engine.. my first reply was NO, but then i strated thinking... always a bad omen arround my house... but wouldnt this work??
take a pair of these
http://cgi.ebay.com/ebaymotors/Ford-...86416006QQrdZ1
and a couple of these
http://cgi.ebay.com/ebaymotors/GM-LS...spagenameZWD1V
add a welder, and apply heat...
this should work with other headers.. and the port spacing might require some minor tweaking. but it will save a LOT of work
just my 2 cents