I have always thought a LSVTEC with B16a pistons would make for a nice street setup. Deck the block 20 thou, ARP rod bolts and head studs, new rings and bearings, etc, etc shouldnt cost too much and will give you enough compression to use a decent sized cam. Add the usual I/H/E + IM/TB + tuning and I reckon you would have yourself a decent NA setup.