Thanks! -for the answers!

I feel that I owe to "answer" myself a little..

Here in Denmark, Sweden and Norway, the trend is absolutely that it's quite allright to modify as long as it is within the original supplements availble from Volvo -meaning:

OD (Overdrive), GT seats, (in terms of the mount-flange, chromed, which allow a much better seat-adjustment), head-restraints, H4-lights (actually you can get them WITH the glas curved so they look like orig. bulb-ones), and so on..

-All parts that was origanily availble on either order from new car or as a supplement later.

I myself, of course, equip my cars with these parts too, and of course there is a big difference in getting parts old/new from where I live, to overseas.

Concerning the difference between a "showcar" and a "daily car" I also understand those who try to built-in features that will make the driving more safe, comfortable etc.

I was just wondering a little, reading all these "Toyota-motor with Chevrolette-gearbox"-treads..

And I migth just ad, that I'm NOT only pro-original.. For the moment I "daily"-drive a 1967 121 equiped with; sportssteeringwheel etc, Audi S8 frontseats (alcartare), and 18x8 inch alloywheel from a Audi S8 with 245/35ZR18 tyres.. BUT standard worn B18 motor.. True, and most of all an attempt to see if such big wheels fit.. They do, but only with a special-designed "flange"/"spacer" that is bolted on and has new bolt-circle for the Audi-wheels.. The car is in all other ways original and stand in orig. paint (67 darkgreen) so with the wheels in antrasit-color, the car makes a pretty raw picture..

/Soren