all aluminum block & heads

Apr 10, 2003
Calabasas, CA
My 1990 K1500 5.7L 5-speed SWB is limited by a week (Getrag) trans for power upgrades as I understand (I lost first & reverse synchro a long time ago - but I still want to keep a manual trans), so I'm thinking of getting some performance by cutting weight & swapping to an all aluminum block & heads lightly modified. I can keep TBI since I don't need more than 300 hp or so & for simplicity. Is there any ideas or threads you could steer me to?
Much appreciated.