Yes, some sort of off-set spacer plate between the seat and the runners would do it.
Maybe some 1 1/4 inch x 3/8 thick strap steel, Counter sunk high tensile machine screws through the strap into the seat
And threaded holes to bolt up through the runners into this strap.
A bit agricultural, but effective, I wouldn't go less in thickness than 3/8 as you need good strength and holding power for the bolts.
I have been out to the garage, measured and done a drawing for you, What I have drawn will move the seat forward 50 mm (2 inchs)
Remember, if you are tall on the other hand and like the seat back a long way, the seat will now not go back as far as it did, with these brackets in place it will now be 50mm (2inchs) further forward even when all the way back.
If you like the look of these, great, but please check all sizes before you make anything. I would hate for you to make these and have them wrong on my account

My car is RH drive, but sizes would be the same.
Steve
P.s
Make sure you round all the corners as I get the feeling moving the seat forward this much, it may end up hitting the side of the transmission tunnel?