5Pt harness still possible?

[Hokiebear]

My 6.5y.o. son is 70lbs and 52 inches so he is about to outgrow his Britax Regent since the height limit is 53" and he grows like a weed!

So basically the question is "what's next?" Ideally I'd like to keep him in a 5pt harness as long as possible. (I'm getting the feeling that may be unrealistic much longer, everyone else I know has had their kids in backless boosters for 3+ years lol) The seat will stay in the car so I don't care how heavy it is or how wide/large. Safety is the priority.
thank you

[arivecchi]

At 6.5, I think he would be very safe in a high back booster. You may want to post in the car seat section in the baby forum which gets more traffic.

[AshleyAnn]

Is there a reason you want him in a harness? There is a lot of debate between experts if a five point harness is safer than a booster once a child is older.,

[lorinick]

I think a 5pt is always safer. But at 6.5 and 70lb I would use a booster without harness. Could he sit still for a 20 minute car ride?