Second thing to consider is ease of installation and skill-set of installer. This is sort of a no-brainer. If you or your installer cannot weld, or does not want to weld, the bolt-in is the one for you.
With Scott’s Hotrods weld in units we have found that the typical install takes about 2 days to install the front cross-member and weld in in complete. That does not include welding in the motor mounts or hooking the steering up. Those 2 can typically be done within 8 hours, but with the vast amount of motor options, that is only an estimate.
Scott’s Hotrods bolt-in units will install faster because there will be less “setting the car/truck up”. All your plates will already be welded in place to set ride height. In most cases the centerline is already predetermined also. Historically the complete bolt-in units will install in less than a day with only basic hand tools and mild drilling for bolts. In some cases our bolt-in units will require the installation of rack notches as well as a bung to be welded in for the steering shafts. These are application specific and will be determined once we discuss it with you.