I have been flying three different trike geared planes, with rear exhaust engines.
On two, both the early Pathfinder 40, a full bodied design from '94 that was flown at the '95 Nats, and the latest Pathfinder LE have the nose gear mounted to the cowl itself. On my version of the All American Eagle, the gear is routed around the exhaust manifold, and mounted to the F-1 bulkhead.
The AAE gear has worked out fine, but the nose gear has some "bounce" to it, looking like a real jet plane, with the way the nose bobs up and down.
The Pathfinders seem to be the best, and sturdiest setup. I have used two variations of attachment to the cowl. Both work good, but the triangle versionis the easiest to make. The version in the pictures is of the other version, and was a bear to bend up. The difference is to avoid the straight fore and aft bends and make a triangle to sit in the grooves.
I'll attach some pics from the Pathfinder LE..