I have a 2007 SG with a stock 96". Currently 100 000 KM, (60 000 mi.). I want to upgrade my motor and I am looking for best value and performance. I am thinking to do the HD 103SE Stage 3 kit and clutch upgrade. I was thinking of the stage 4 kit with heads but I am leaning in doing the heads and crank next year. What are people's thoughts, and has anyone done the stage 3 with Hugh mileage and run into bottom end issues after, ie: crank or bearing. I have looked at S&S 107 kit and HD 103 kits, leaning towards HD.

 

I have the SE 103 but i built mine out of mixed and matched parts, look at my sig pic and you will se what I mean. If i had to do it all over again I would go with one of the reputable engine builders you will find right here in the hot rod section of the HDForum. Now I could not afford to ship my whole engine up north from the middle of Texas but I would order a kit and have my Indy put it together for me.

 

your better off getting your cylinders bored to 107",cheaper than the S&S kit and you`ll be getting pistons & cylinders that were actually matched (here anyway,but im sure everyone offering 107" kits here matches the piston kit to the cylinders sent in)

 

Just do 107 from one of the venders on here,than do your crank and heads next year like you want.but it would be
cheaper to do it all at once.If you do the work yourself you could do cams pistons and cylinders for less than 1500