Trying to build power....225 step by step help

Hi Guys im trying something new...im more confortable to post here than any place else on the web : just bough a 1970 deputy challenger 225 3 speed....needs a total resto, but waa thinking to do something cool with it...and built a kind of 225 sleeper e bodie..i have no Clue ( so used to small blocks ) ..were to start and what to do with a 225, would like to run efi , Uncle tony garage as good infos , but is there sites or simple infos to go get 250-300 hp with a slant in a light body, thx guys !!!

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I just had a 225 charger built to the hilt. Randy McDowell at Powertech racing in Ashland Kentucky did the work. Power Tech is on Facebook you should check him out. There’s no one else in the United States I would trust to do the Percision work that he does.He can special order everything you need for a slant six. All the top in parts you need to come from Clifford performance. The only thing I would invest in other than that is dutra duels. I think they are better than Clifford headers simply because they are much shorter and easier to fit. If you would like any information from my build just shoot me a PM I’ll be glad to help if I can.