hey! heres a list of some of my upgrades.

clutch: got me a AL clutch from ebay

shocks: one pair 80mm rear, one pair 70mm front.
http://www.rcmart.com/catalog/produc...ducts_id=20084

bearing upgrade: a must! and very affordable!
http://www.rcmart.com/catalog/produc...ducts_id=11449

servos: both metal geared and plastic geared, these are in my opinion affordable servos and very durable and precise.
http://www.rcmart.com/catalog/produc...ducts_id=19769
http://www.rcmart.com/catalog/produc...ducts_id=19767

fuel tank: got me a sintech fuel tank from LHS. stronger and it almost fits, need to drill a new hole in chassis. my tank was leaking in the joint on the middle, and thats not good since its pressurised.

engine: wanted more power and got it. extremely easy to tune aswell.
http://cgi.ebay.com/Smartech-18-nitr...QQcmdZViewItem

hope this is any help to anyone.. or else i just wasted a lot of time writing this