need an opinion

I want to make a custom figure
out of this model
http://www.aawesometoy.com/index.php?main_page=product_info&cPath=12_5&products_id=164&zenid=76358db1d5a8f2f634d25535e16b8ee4
I need some help
1. what figure should I use?
2. whats the best way to attach the parts while making sure It still transforms?
out of this model
http://www.aawesometoy.com/index.php?main_page=product_info&cPath=12_5&products_id=164&zenid=76358db1d5a8f2f634d25535e16b8ee4
I need some help
1. what figure should I use?
2. whats the best way to attach the parts while making sure It still transforms?