car trailer

hi all Ive finally managed to get my car trailer back, so Ive tried the beast on it and yeah the axles dont seem to like the weight of it :evil:

. its a twin axle and takes a vectra fine so me thinks i need to upgrade the axles a tad bit :mrgreen:

ive 4 fronty wheels sat there so i was thinking of using an axle of a scrapper truck with the diff free wheeling but the track is to narrow for the trailer .... any ideas how i could extend it or what i could use ?

the axles that are on are singles bolted on (http://www.towsure.com/product/Braked_T ... nch_Wheels) that type .. ive measured up and the axle with hub to hub is 2100mm cant think of any vehicle i could get an axle off that wide .... oh on a second note dose the trailer have to be longer than the car its carrying or is it ok for the boot bit to over hang?