i say get a gasket for your intake...then use the bolt patterns and flange holes and all that and use that as your starting point...from there u can pretty much do whatever u want...but when making mounting plates etc...use a gasket and trace it to the metal...use aluminum for sure though...but normal steel will work too as long as u can protect it with something that will withstand fuel and water etc..


got my 78 merc with a 250 I6 and i love it.