Type 1 motor with 45mm throttle bodies full radius ram pipes and individual air filters.
1 3/4 stainless steel merged header.

Type 1 motor with twin single 45mm throttles and full radius flter mounts
2 1/2" top diameter
1 5/8 inch stainless header and muffler

Type 1 motor with 45mm throttle bodies full radius tall ram pipes and individual air filters.
1 3/4 stainless steel merged header with 70mm muffler