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I would like to weld a new set of these onto my 74 2.0, but it must be done in old driveway, and to get to them the car will be jacked up of course, my concern is when jacked up and I remove the old ones will I lose allighnment of my chasis is some way and then when welding on the new one throw off the orginal allighment of the chasis permently? Any advice helpfull.. I just do not want a stupid now..

Not enough heat transfer and the area your working in is to small with these to affect your chassis.

Thanks, Perfect. Just for Jacking thats what I expected but what I expect is not always correct.