can any1 help as when i put the car under load it feels like it it looses power and holds back then misfires. cant seem to get it passed 70-80 mph any ideas?? will be checking plugs, coil pack and leads 2mora could it be a fueling problem?

 

I pressume it's a uk2000 you have looking at your photo?

I had the exacgt same problem. Turned out it was the coil pack and the leads.

New coil pack and magnecor leads. Turned it into a new car.