I've just got my first mini to fix up, It's a sensation mb6a. Is this bike something that should be kept in stock form or is it average enough to make it viable for mods? First I only have the frame and fork/handle bar and front wheel, they are original and in good condition, I've located a rear sensation wheel so far. The mods I have in mind are suspension front and rear,(seat , not swing arm) and maybe a jackshaft or tc. Any thoughts?