hi i am in the middle of fully restoring 2 r5 gt turbos, just wondering how far i should go, i have only had them 6 months and new to the r5, i am starting to really get into them just like many people on here. i am just wondering if i kept one undercover for many years would it go up in value or down eg collectors? dont want to put unessecary money into it if you know what i mean. would be grateful for any advice, thanks