[Bud Man]

When I built 142, I used the insulation that Motorsports Intl sells. It is a very high quality, densely woven material, and I am very pleased with it so far. There is other stuff out there, but you cannot go wrong with this particular product.

On sealing the dash etc..... By all means use plugs for unused holes, but in all honesty, I didn't end up with any. Make sure your grommets are the proper ID to properly seal around lines and hoses. The major openings that engine heat travels through are the two gaps at the top ends of the firewall that allow the scuttle braces to pass thru. The probelm is made worse because when the factory fits the firewall they more often that not bend the openings out somewhat. My suggestion is to first straighten those bends (if present) and then purchase a couple of feet of the inner panel OEM foam strip that Motorsports sells. Razor cut a 1/4 deep slit in it, cut it to fit the openings and glue onto the panel opening around the brace.

On cutting the vent holes into the inner fender panels, I am not sure if the benefit is worth it, but if you do, make sure you rivet a fine enough screen over the openings to minimize debris from the tires.

Cockpit heat is a fact of life with these things, but the above will help.

Bud