1d series motor are pointless NA. i personally would turbo it. if you want it to be anywhere around 250-300, youll need forged internals. id recommend tuner toys or eagle rods, and wiseco pistons. wiseco pistons come with rings, etc so no need to worry.
but in all actuallity, no mater what people say, youll eventually want a b-series, unless u are a sohc fanatic. im more of a power fanatic, thats why i bought a b18b and will be building it for high boost.