Where is the weak point
A little off subject but if you are planning subframe connectors, I am a proponent of MIG welding. If possible a 220 unit with gas shielding. Its the best 1000 bucks you ever spent. Yes you can get away with less, but get the best you can afford and learn the machine. You won't regret it. There are some real talented welders on here and you tube that will solve most of your questions.
Life is better welded together (T shirt?) :thumbsup:
$0.02