Sanwa bat-top conversion?

[knohbody]

I have a sanwa bat top that i got off ebay (i'm assuming it's legit, b/c it has sanwa stamped on pretty much everything.) Was wondering if i can get just a ball top for it. The reason i asked is that when I looked at the ball tops, it looks as if the shafts are a different size, and there was someone selling an adapter for a ball top shaft to a bat top shaft. I'd like to be able to switch, so i can get a feel for which one i like more.
Here's a pic, if it helps.

[destructor]

I can say what I hear and read.
Please measure screw-thread of shaft. If it is 8mm then you have Sanwa JLW-UM8 which support battop and 45mm balltop only. If it is 6mm you have Sanwa JLW-TM8 which can use battop and all balltops. Adapters for 6mm (6mm->8mm) are added for every balltop/battop.

[kowal]

Only balltop was it been possible to exchange on battop
balltop M6
Battop M8
http://www.kowal.itcom.pl/Side/ArcadeStick/index_pliki/JLW.htm
you will not make anything

[knohbody]

Thanks for the quick replys, guys. I measured the shaft, it's an 8mm, so i guess i'm looking for a 45mm balltop. Any source in the US for these?

[destructor]

Balltop 45mm is 8mm as battop.
Maybe ask ponyboy in Sell/Trade.
If not, maybe there:
http://www.akihabarashop.com/products.html