Yes as cooperman says, you can move the seat runners back until the back of the rear seat is touching the bulkhead. First thing, you will find that you can have the seat back, if rake adjustable, (in a more upright position) when your leg reach is better, so bear that in mind when re positioning.
Second thing, when you have found your new position you will have to mark and drill the new position for the fixings through the seat mounting runner to be able to use the chassis cross member elements to secure it safely.
Third thing. Dependent on the age of your car it will dictate whether there are wooden seat spacers fitted underneath the seat frame fixing bar. Mine is 2010 and had none fitted as standard. I found that the seat squab angle was too high at the front edge and when pressing brake or clutch I was straining my thigh and hurting my lower back as I was fighting the front of the seat so I made tapered spacers which abutted the front chassis cross member at about 1/4" thick tapering up to just under 3/4" at the rear end of the seat mount. This has made a massive difference to the comfort of my seating position and I am now enjoying the control of the foot pedals I had hoped for without the tiring fight that I was getting from the MMC designed ergonomics!
