Hi Brian and welcome,
My grandson Harvey was 3 y/o when he took delivery of the T2 (he's 5 now), and it has spent many hours being driven around the local school field, crashed into walls, gate posts, tree's and other non moveable objects!
The body is looking a little tatty now, but still structurally sound, and all of the mechanical parts, even the ones I've made, are standing Up to the punishment really well.
This is in no small part due to the superb original design, and Richard's modifications and developments over the years.
If you follow the instructions in the build manual that Richard supplies, you will have no trouble in building a strong and reliable vehicle, that will last for many years to come.
Many vehicles on the forum have had modifications applied to them, to suit their owner / builders requirements, but these are not really needed.
I would suggest that you contact Mr Shepherd and find out where his next show will be, then get yourself (and the proposed new driver) along, meet Richard, have a chat and a test drive! Stoneleigh Park Aug Bank Hols
As for the age of the driver, if the controls are simple enough, then age 3 up wards seems to be the norm. If he can handle a Peg Pegaro, Toylander is the next logical (and stronger) step forward.
Plus, you have the backing of the TOC behind you for help and advice!
Hope this has helped,
Regards,
Mark.
(Richard's PR secretary!) Thank you Mark RS