How to trike...
I'm using an RV-7A gear-set. A couple of things stands out about this conversion. The main gear are flat, like the RV-8 and they're mounted pretty far aft. There's no good hard-points there, so he probably had to make one. The RV-6A+ use the main spar and rake the gear back similar to the RV-3,4&6. The nose wheel looks like it's off an RV-*A, but a bit smaller... cut down?
I plan to take the 7A hardware and bolt it to the spar similarly. It is likely the bolt patterns won't match (very different spar configuration) I will weld the holes over and re-drill to match my spar.
On the nose... I'm a lot less certain here. The RV-8A mount uses a 5&6th point down low. It's actually below the fuselage in a false bottom used to create the cowl exit. I think I will try to duplicate this but the space in that area is extra tight with engine exhaust, so this may be quite tricky. Hence... I'd like to see someone else's setup, esp the bottom firewall area.
Thanks!