an h2b runds good! but the cost of the motor the plate and everything else involed, depending on what kit you go with you are looking at alot of work. from the 2 h2b's ive done your looking at about a weeks worth of work in the evening, taking your time and make sure your doing everything right. for the money id go strait ls or possibly an lsv for the money your looking at for an h2b... but still there is no replacement for displacement... if you could find a b20 id recomend a b20v there big time bang for the buck! but if you have a ls do itr or sir pistons and a b16 head... youd be very happy!
