I found this company who makes TB and IM heat insulator kits but haven't yet made applications for D-series motors. I'm looking for anyone who might be interested in this as I am. They told me if I find a market they will R&D them for our motors. Their kits are complete and say their material is better than hondatas.
Check them out.
http://www.outlawengineering.com
Also, if anyone is interested in using your D-series powered car as a prototype for them to design their product and located by indianapolis let me or them know.

 

Considering these guys are one of the few actually making phenolic spacers for hondas, I would definately be interested. I haven't been particularly fond of any of the plastic spacers that others are offering.

I've got a ported head and edelbrock intake manifold showing up in a week or so, so I would love to get one of these.