upgrading a 88 to a 103

[dolt]

I agree.
But if the OP has his heart set on a 4 3/8" arm, then at that point, a set of 4 1/8" cylinders on top of that will yield a 117"er.
That, my friends, is a HOOT to ride!!
Those in very tame form, will push off 130/130, and high-output versions, can bang on the 150 hp mark.

130HP within reach; 150HP would be rare and probably not so much a hoot to ride.

 

[BUBBIE]

130HP within reach; 150HP would be rare and probably not so much a hoot to ride.

:newsmile100:

Can be Very expensive on all the parts concerned, from the gas tank to the ground... But FUN.....

No going back after such a BUILD

signed....BUBBIE