Hi, I would like some advise on parts before I place an order with Tower (its my birthday on Wednesday so I thought I'd treat myself

). I'm gonna get a few upgrades including the super chassie and the woven-graphite upper deck. There are a few bits im not sure will fit, though, or if they are any good . Any advice would be appriciated.
I found these and have just broke the bit they replace so they look very attractive at the mo (appart from the purple). They're listed for the RS4 MT, any one know if they fit the MT2??
http://www2.towerhobbies.com/cgi-bin...?&I=LXVZ50&P=7
AND
http://www2.towerhobbies.com/cgi-bin...?&I=LXVZ54&P=7
Also I'd like a bigger fuel tank but right this second Tower ranout of the HPI 100cc ones. Anyone know if this would fit...
http://www2.towerhobbies.com/cgi-bin...&I=LXFZN7&P=ML ...I may be dreaming. If not that one, didn't someone fit this one with no probs...
http://www2.towerhobbies.com/cgi-bin...?&I=LXBM24&P=7
And to go with the tank I was looking at this
http://www2.towerhobbies.com/cgi-bin...&I=LXEYG3&P=DC mainly because I'm not sure how to prime the engine without the pump.
I also found these and they looked like quite good value...
http://www2.towerhobbies.com/cgi-bin...?&I=LXZJ59&P=7
Any advice would be great. And Happy Easter