my short deck xr2 weighed 237# when delv. with @ 3.89 bore, after Ryan got bore @ 4.1875 & deck @6.085 @some lighting work it's down to 195# app., this enigne is a 397c/i with a billet crank,steel rods,all good pieces, no junk, boy's you just got think out of the BOX,any thing is possible, i've still got $5000 less than a comparable junk-a-lay,am looking forward to raceing some good brand-x's,hang in there bob,duster,&all you had heads, it can be done & within reason thank's Ryan @ shadey dell& kent ritter jg309