I would like to put a turbo on my 350. But i can only find twin turbo kits that cost like $3000-$5000 an most are for fuel injection or TPI. I have saw old single turbo kits for sbc much cheaper. But I don't understand how it would work. Wouldn't your have back-pressure issue, if only half the motor had the back-pressure from the turbo and the other half just has a header. So if some can explain this too me,or give me a site that does i would really love the help.