diesel capri is probably the worst idea ever, a guy in sweden installed a tdi engine in one.ruined the car just because of the sound and smell.

if you want a reliable fast and almost economical capri i would look at some modern engine,zetec,duratec if you want 4 cylinder and m50/m52 bmw engine if you need a 6 cylinder. m50b25 is 192 ps straight out of the box and there are plenty around of them.