This is the furnace: Model 58BA080

https://docs.google.com/viewer?a=v&q=cache:ucug-8WZMO4J:www.docs.hvacpartners.com/idc/groups/public/documents/techlit/58ba511035.pdf+carrier+furnace+58BA080&hl=en&gl=us&pid=bl&srcid=ADGEESiv27OYx71Q5VeoehfF41paYYsc-TKaEZpcUnAa2bW9xOXzso-mJ4uTgQ2pGYZIUN-J5kgJfqlFH6KQjNDbTRZfkv8LKb_fp2gDqoXcg4aYbKzbGviOYmrFveRhtUX9D-sxh-So&sig=AHIEtbSCJADIcni2t6k64qcLXoL6BXzrFA

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1977 300d 70k--sold 08
1985 300TD 185k+
1984 307d 126k--sold 8/03
1985 409d 65k--sold 06
1984 300SD 315k--daughter's car
1979 300SD 122k--sold 2/11
1999 Fuso FG Expedition Camper
1993 GMC Sierra 6.5 TD 4x4
1982 Bluebird Wanderlodge CAT 3208--Sold 2/13