Hi IlieD4U,
Not necessarily mahogany, please see files specs from our archive attached which specify 'selected tone woods" and "high output humbucking pickups"- not specified that they are Dirty Finger pickups.
Specs from the Gruhns Guide to Vintage Guitars are as follows:
Invader: Les Paul-type single cutaway, mahogany body, beveled bass-side edge, 2 ceramic magnet humbucking pickups with exposed zebra coils, 4 knobs, 3-way selector switch mounted with control knobs, tune-o-matic bridge, stop tailpiece, bolt-on maple neck, ebony fingerboard, dot inlay, standard Gibson peghead shape, decal logo, chrome-plated hardware
Introduced: 1983
Alpine white, ebony or Ferrari red finish: by 1986
Discontinued: 1988