eh it is worth it if you want to do some cheap mods, and don't mind having some machining done, but over all it will not get you the power you want, if i were you i would try to get a d16a6 block and swap heads or use the dx head, and go turbo...
and if you are going all motor, i would do an MPFI swap, si cam, and some high compression pistons, and if you have the time and money maybe some stronger rods, that would be a pretty haul ass 1.5l...