B18A turbo or B16A1 turbo

My motor (b18) has about 100k on it, but i plan to rebuild it and turbocharge it. If i got a b16 i would still rebuild it an then turbocharge it. i think i should save the $1500 and get a LSD. Is this a good idea or am i going to blow my B18?. I plan on running 10-15psi street and 20+psi strip. looking to make 275-300whp

save the $1500 & get an lsd. you can easily make 300+ hp with a turbo ls.