how did you set up the hooks on the floor of the van for the rear espace seat's?The seats I fitted to the front of my T4 came out of a Renault Grand Espace, the good news is that they already come as swivel captains pattern and all you have to do is drill a couple of holes for one of the sliding runners as the Renault runners are slightly narrower than the VW ones, I also fitted the rear ones from the same vehicle, I purchased the whole seven seats including the rear running tracks , for the sum of £140.00 and they are leather and mighty comfy to and the rears can be adjusted into a bed so to me they were a real bargain, also I forgot to say you can remove the rear seats as they unclip, to use your van as a van, regards bighook.
What about seat belt does t4 belt clip fit the alfa receiverAlfa 156 seats just require four new holes to be drilled into the seat base on later T4's (96 onwards I think).
The bolts on the rails are 370mm centres on the Alfa seats. I think they are about 380mm on normal T4 seats.
Here's a picture of mine which I fitted today. They're blue leather and match the blue interior of my velle nicely. The drivers is height adjustable and range from slightly lower than stock to a bit higher.
Took about 3.5 hours to fit, but I wasn't rushing as it was sunny this morning