That "giveaway" is actually a lottery - I suggest avoiding that, but in this case it's good that it triggered awareness of this style of conversion. 
Air-cooled VWs (and related Porsches) are one of the most common targets of conversions, so there's lots of information available. Have fun!
Air-cooled VWs (and related Porsches) are one of the most common targets of conversions, so there's lots of information available. Have fun!