1969 Scorpion Mark III 400 Mar 17, 2013 9:06:13 GMT -5 Quote Select PostDeselect PostLink to PostMemberGive GiftBack to Top Post by scorpionvintage on Mar 17, 2013 9:06:13 GMT -5 cgi.ebay.com/ebaymotors/1969-Scorpion-snowmobile-Mark-III-400-/160989276310?pt=Snowmobiles&hash=item257bb56896#v4-45this ad maybe exhaust is for Tillotson carb HR yes or no.......because i have tipe exhaust on my sa-293 with Hr tillotson carb:and the sa-370 i have the HD carb: sample HD carb largest output