aprillia sr50 70cc kit help please !

hello guys right i have a aprillia sr 50 2005 model i think its the ditech model , only purachased it yesterday and am looking at some 70cc kits , but i have been told you have to change ecu , cdi ect.. these are the 2 kits im looking at this is the 1st one

http://cgi.ebay.co.uk/ws/eBayISAPI....083718&ssPageName=STRK:MEWAX:IT#ht_2854wt_782
and this is the 2nd 1

http://cgi.ebay.co.uk/ws/eBayISAPI....464349&ssPageName=STRK:MEWAX:IT#ht_2383wt_702

right if i put one of these kits on my bike will it run the potential speed of the 70cc kit alot faster and more tourqe ? or will i have to change the ecu or cdi to run 1 of these kits and it will make it no fatser without changing the ecu or cdi ? or can i just put on 1 of these kits without changing the electrics ? and it also has the theo vince tt exaust , and what is the best kit for my bike out of these 2 cheers matty :good:

 

You need to find if it's carbed or injected. If it's the ditech model you need a different kit with an ECU, very expensive.