XRAY - Model racing cars

I have an original T1 with the C-hub conversion kit fitted and a front one way (I also have the anti-roll bar). I want to race on this track: http://www.trcracing.net/ (click on the link “NEW TRACK”).

I was wondering what I should buy to bring the old T1 up to scratch.

Of these parts/upgrades, what are the benefits and are they really needed:

Newer bulkheads (if so which generation)
Shorter arms
Newer lower deck (if so which generation)
Newer UPPER deck (if so which generation/type)


Is there anything else worth mentioning? I have the newer (evo 2) shock tower mounts for the front, but not the rear as I am still running the old serpent shocks on the rear.

So basically, what would you guys recommend I do? Buy some parts to upgrade it, or buy a cheap second-hand evo 2 and swap and change parts as needed?

BTW I would be running a 23t "Asian" Stock motor.

I went to a local hobby shop and spotted a brand new (just put together but never used) Xray T1FK04 with the XRC chassis and wide upperdeck for $1500 HKD (second hand, but basically new, the battery foam wasn't even dented). It even has hudy spring steel outdrives!

BTW $1500HKD is 148.65 Euros or $192.497 USD. It is half what a FK04 kit would cost here, but mine has the XRC and Wide upper deck etc.