There is a stock 3 piece that came out for the 2004, it's a full under body stock panel to help on air drag in coasting If that where your heading, I was interested but the shipping was not worth the cause, what are your needs for the hhc1 ? Is it coasting distance? A full body panel beside rRR rated tires,removing the mud flap, (large total air frontal) and a simple pop in the front under flap molding. that hitting parking stopper bumper keep pop them out,
All can give you about a 100% range of coasting. I did my underpanel in a special foil that nylon canvas, held up with 3m contact cement,
If Have to do it again I would used this
26 in. x 12 ft. Solar Gray Polycarbonate Corrugated Roofing Panel-101931 at The Home Depot
It's the right strength, and easy cut and heldup, rubber coated washers and screews. but watch and leave space for tailpipes and mufflers and it's square corrugated it's could have a pro look done right.
2 pieces 12 ' long is enough. making the maintenance cover, body ,and behind trunk piece.
HCH1 Under Engine Panels
