Slottolution slotcar chassis fits to the body of the Revell Porsche 911 / 934 RSR Turno , for example item 07031. As well as the Heller 934 (80714) and Tamiya 934 RSR Turbo (24334).
18D motors fits: Motor diameter max. 25mm, flat-diameter max. 19mm, lenght max. 37mm, diameter flange max. 6,5mm, distance screws 11-13mm
For example: Slotdevil 4020, Johnson 20543 etc.
If you want to use a different motor, please have a look into my shop.
Distance between front- and rear-axle: 94,5mm
Height of the chassis is adjustable +/-2mm
Showed front wheels have outer diameter of 23,5mm and width (all) 14mm
Showed rear wheels have outer diameter of 26,5mm and width (all) 19mm
(Frankenslot BMW M1 124 wheels
For question please watch linked Youtube video or write me a mail.