No probs, when i have altered commercial vehicles before axles,suspension,chassis or brakes I have submittet a (vtg10 notice or alteration) form to vosa they check your work and do brake test, and if everything is ok issue you with a (vtg6 and vtg7 plate witch you keep the 6 plate in the cab as it contains the new configerations and weights on and takes presidence over the vin plate. Of corse if i built it i would just state it was built years ago before the regs changed
