What kind of numbers are you looking for? We all know you can bolt a small charger on a stock motor without issue if you are going to be satisfied with 350hp. The first thing I would do is make sure your compression is no higher than 9:1 or even a bit lower ideally. That can be achieved by adding a set of lower compression forged pistons. The fasteners someone mentioned are a good idea. You can do some work to your existing heads to get them to flow better, but aluminum heads stay cooler and also disapate heat better which will become an issue. I am assuming you already have a 4barrel intake and carb. If not, you are not quite ready for this mod. Definately fuel flow upgrade, ignition upgrade and cooler plugs. Now, if you are looking for big power, then you need to do all the typical things ie: forged rods, crank, cooling system, full exhaust. All the major mfg's make units suitable for your application. You really just need the blow-through adapter that lets you hook the piping up to a carb and a pully that matches your belt system. You might have to convert your pullies to a better belt system. Call any mfg and tell them what you are trying to do, they have folks that get paid to do all the figuring for you.
__________________ 97 Cobra-03 Cobra t56 and alum DS, SPEC111 clutch, FRPP 4:10,T&J Performance Forged 4v(8.9:1), Manley rods, Novi 2000 w/ Fast Track A/A I/C, Barry Grant Fuel syst., BBK longtubes and H-pipe, MSD ignition, Detroit True Track, Magnaflows, 315 NT01's on 17 x 11's, KB BAS, SCT tune and about a million other things. 575 RWHP. Going into the shop this winter, looking for 650 RWHP. | 
