You seem to be on the right track. The Sportique adopted 10" inch wheels for it's last years of production ('63 to '65' I believe), so yours are probably original?
As this is a 'large-frame to large-frame engine transplant, there should be no 'wheel alignment issues' nor frame clearance issues at the engine end, just use the Sportiques's original shock distance bolt at the back. (The Sportique is not a 'wide-mount' like the GS150 and has totally different offset wheel rims)
You should consider an up-rated front suspension spring as the original was pretty dire at 50mph max speed.
If you want a disc brake then the PK125XL forks are the most suitable basis: but this is expensive, labour intensive and probably OTT for a standard engine. Keeping the appearance consistent is also a factor. A beefed-up front spring and damper with well set-up drum front hub should be totally adequate. Can offer more advice If you think you want better, or pick-up a copy of the new SIP catalogue this shows all the available options in great detail.
Your only other major conversion issue is the electrical system. There is everything you need 'off the shelf' at specialist shops these days, with easy to follow diagrams etc. - Not like the time I did my 1st one.
ArmandTanzarian wrote:
Since he quite clearly asks how you go about fitting a 10" wheel to the front I would say its a reasonable guess to assume that he has 8" wheels otherwise he wouldn't be asking how to replace a 10" wheel with another one would he.
I did not know if he had a complete scooter or not: so the question was to do with offering advice abouth the mudguard and the front suspension spring length from a sound basis. Anyhow, turns out he has a 10" front end already :wtf: