hey all.....hope ya might be able to help me out....I been looking at some of the post and thought i might ask here....ok.here is the deal...i am looking at a boat with twin 1989 175 rudes (vro)...compression is within spec on all 12 cyls.....i have seen some posts where they have removed the VRO and pre-mixed theie fuel......dont know how easy it is to do with 195gals of gas....but anything i should look out for from these motors??......hope ya can help and thanks in advance