w201/w124 - Book rate for replacing front LCA's+all 4 springs

[Sev]

Can someone tell me how long it takes to replace the front LCA's and all four springs on a w201/w124 according to the manual? My mech (a very reputable mech in Los Angeles who'se well-touted on here and Benz world) wants to charge me $400 for it, and his hourly flat rate is $80 an hour. That's five hours, but I believe it should take less time, considering the front springs replacement time will be included in the LCA remove/replace time.