hi did mine about a month ago but i did have use of car ramp i tried it without touching subframe but it didnt happen so i unbolted it on a transmision jack and just moved it about when needed if your doing it on floor i would recommend removing it completely and also the intercooler pipe between each intercooler, the more room you have the easier it will be, also i put new gearbox mount bolts and driveshaft hub bolts in as there stretch bolts