The Ansmann X-Pro shocks are excellent btw... £50 for the full set with springs, or about £36 without springs.
A T4, which I assume you mean a Truggy version of the X4... is not in the 2010 catalogue...
But now that you have mentioned it I think I might grab a Blizzard and do a Truggy conversion for some quality bashing, can't be that hard. Would need to make a new front shock tower, probably use the Royal Flash (larger) shocks and get some nice 2.2 or 2.8 truck wheels and a Proline crowed pleaser 2 shell... job done, great idea
J