UPDATE 10-27-2017 from Heinz U.S. Rep SH:

Paraphrasing ... There is a Cg hook mod for D2a... [SH] said it will include fiberglass piece to mod your seat pan slightly to cover release.( make a bump). ... ordered it no matter what as D2 is limited production now so we will have it for you; or keep it in stock. Other quote include new seat pan rough from mold that is not needed. They say.

Tost G88 tow release "without lever". Tow hook not included with kit.

Walt Rogers WX