Here is an alternative set of wheels and exhausts for your Special Hobby P-39D kit, or any other early P-39. This one features wheels with subtly weighted tires, and an improved set of exhausts with hollow round tips. It also provides a replacement panel for the inaccurate exhaust panel of the kit. The panel has holes to properly space the exhausts. Highly recommended. Check them out at MasterCasters: http://www.mastercasters.co.uk/