As far as mods go Mike sell a kit for your truck to lengthen the chassis and it comes w/ a motor mount...here's the link...
http://www.rc-monster.com/proddetail...od=rcmcrt.5kit
Also, many forum members have a crt.5 so keep asking as far as the motor selection goes...I am not sure, but, I believe Neu makes a motor that would fit in there...again not 100% sure.....Welcome to the forums!
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S