seat

I need a new seat (actualy just the bottom runner) but have been told that there are different types of runners, how do I tell the difference?
HELP
Don

what yearare ya wanting

Year model is anoyher problem as its not a standard v dub, one of those cut down f/glass jobs, hell of a lot of fun to drive but as a new v duber I am on a fast learning curve. I have checked the track and it just comes straight up off the floor and then turns out at 90 deg about 5-10 mm. The track on the seat seems to be a simple channel that sits around the floor bit. Does that give you any clues
Thanks
Don

any pics
is it a beetle, golf , t3
measure the width of track and length
do the welds look proffessional??

thanks for the help, tried photo but too cramped to get something clear 375mm between rails if thats a help definatly a beetle as that is the only type they cut down to make the buggys welding is definatly original
thanks
don

is this how you bump?