Autoloc seatbelts?

anyone ever used these autoloc seatbelts from summit? how long are they?
http://www.summitracing.com/parts/HFM-SB2PBK/

i'm trying to find out how long they are because I "customized" the bench seat from my dart to fit into my satellite. and only problem I have is the stock seatbelts being a little too short..