So my power top motor is leaking severly out of the main seal on the pump. Is it feasable to rebuild, replace the seal, if so how hard of a job is it? Also I see a bunch on ebay for 1980's - 1990's Lebaron Converts for a fraction of the price that look identical! Are they the same, will they work on my 1970 E-body? Thank you again for any suggestions, and help!