Fitting Porsche seats to a 1302

[super vw]

i was thinking about fabricating a 3 point mount like vyper was talking about, for the very reson he mentioned about drilling holes in the pan.
but it for me i need it as low as posible (im tall).
not sure when i will make it, i need to look into some tools i would need. i have a MIG welder but nothing really that cuts metal (other than an angle grinder).