The car has been running well lately except the other night it would start bucking, backfiring and losing power in 5th gear. So I kept it in 4th. After awhile it started the same stuff in 4th. A little later after doing some limping it seemed to run OK. I checked the fuel filter it was good. I recently replaced the MSD box, distributor and coil ( All MSD).
Any ideas on this hang up?
Paul