They never did make the power ford claimed, I had a xr4i with same engine, but modded heads, warmer cam, magnex exhaust, k&n etc +90thou, after my 2.1 pinto AUTOMATIC sierra went to the scrapyard in the sky, what a major dissapointemnt the 2.8 lump was, my 2.1 pinto was way faster, even on a 40 dfi!!
tabetha