I'm talking out of my butt here I think but...... If I'm not mistaken you can buy a ztec motor @ a resonable price now. Might just be worth a new or rebuilt motor with some warranty rather than finding out the block is cracked or something. BTB I had my motor on my ztec go before. Cracked #2 cylindar. This was at 50000miles.

hunter green 96 mystique mtx, sabb side markers deep tints
car bra., K & N filter, hyper white low beams, after market fogs, JVC Kameleon head unit, 600 watt amp with 2 10" kicker subs, soon to come new rims

New adition 01/11/2002 The original 95SE in Midnight Red all the toys including traction control
Fog light mod, lightmoonroof switch from a focus, power antena (still wiring it up) post 98 sail panels, new water pump , Bosch quad plaitnum plugs, and a new Cat.