Higgins heads are awesome bit of kit their ports make my hand porting look archaic but you will be going a different path there What happened to the developers and car builders in the world,if u want honest advice on building a budget performance pack blowing that coin on Cnc heads on forced induction is a joke! unless it's a competition engine stock heads with a decent cam and lifters and valve springs 600hp plus Is easily obtained with a turbo! a lil harder with a charger ,but big dollar heads are nice to look at and ultimately the best way to go for getting a bit more that's right a bit ! Ports don't make power but the help and are part of a good package ,bigger isn't allways faster but unless you want that never ending spiral down the money pit of power keep it simple and don't go too big if he's happy with 300kw what do u think a boosted and cammed Ls with Higgins heads will make for power ?let's just say u will want to ditch that clutch, now I'll let you know more opinions more better to make your mind up but I build engines that produce over 1 hp per cc by hand and they're built cheap so I dunno
