Seems like you'd be close with just swapping to an '87 with the additional cylinder, good running ones w/o the trap-ox are around 150hp. Stock with the original trap-ox was 8.7seconds 0-55mph.

The belief here is that the 603 IP is capable of close to 200hp with stock 5.5mm elements.

Not a tire-burner, but respectable.

Spending the same money on the 603 will give you one cylinder more power.

__________________

Gone to the dark side

- Jeff