You and your Dad's on road cars look a lot like my on road conversion...mine is a MBX-5 running a 2200 cc motor on 5s. I actually have added Revo shocks front and rear to stiffen suspension conciderably..just not pictured
1. MBX-6 T8 1900KV, RX8 ON 4S
2. MBX-5T 1520, MMM ON 5S
3. MBX-5 ONROAD CONVERSION 1515, MMM ON 5S
4. MRX-3 ON ROAD CONVERSION 1512, MMM ON 6S
5. TEN T 2650 T8, MMP ON 3S